Klaus—pronounced KLOWSS, crisp as the snap of Alpine air—is the spirited German diminutive of Nikolaus, itself rooted in the Greek Nikólaos, “victory of the people.” One can almost picture him sauntering through a snow-dusted Christkindlmarkt, cinnamon steam curling around his name while church bells chime in perfect iambs. Yet Klaus is no seasonal cameo: from philosopher Klaus Mann to rocker Klaus Meine, the moniker has marched across disciplines with steady, leather-booted confidence. In the United States he has lingered on the fringes—ranking in the 800-900 corridor for decades—like a shy troubadour humming a timeless tune. Literary minds may recall Klaus Baudelaire’s quicksilver curiosity, and holiday hearts inevitably drift to old Saint Nick, whose legend the name softly echoes. With a meaning that champions the crowd but a usage that stays delightfully uncommon, Klaus offers parents a blend of communal triumph and individual flair—much like a rich café con leche shared at dawn on a quiet Barcelona boulevard, warming the hands while promising adventure just beyond the next corner.
| Klaus Iohannis is a Romanian politician and former physics teacher who served as president of Romania from 2014 to 2025. |
| Klaus Kinski was a German actor known for his intense performances and five films with director Werner Herzog. |
| Klaus Mann was a German writer and anti-fascist activist, and the son of novelist Thomas Mann. |
| Klaus Schwab is a German engineer and economist who founded the World Economic Forum and served as its chairman until April 2025. |
| Klaus Wowereit is a German politician who served as the Governing Mayor of Berlin from 2001 to 2014. |
| Klaus Kinkel was a German politician and lawyer who served as foreign minister and vice chancellor under Helmut Kohl. |
| Klaus Dieter Bachmann is a German journalist, historian and author known for his work on European politics and culture. |
| Klaus Maria Brandauer is an Austrian actor, director and professor at the Max Reinhardt Seminar. |
| Klaus and Eva Herlitz were German entrepreneurs who created United Buddy Bears to promote international friendship and cooperation. |
| Klaus Lackner - Klaus S. Lackner is a pioneering scientist known for proposing the capture of carbon dioxide directly from the air to help combat climate change. |
| Klaus von Klitzing is a German physicist who won the 1985 Nobel Prize in Physics for discovering the integer quantum Hall effect. |
| Klaus von Dohnanyi is a German politician who served as mayor of Hamburg from 1981 to 1988. |
| Klaus Rifbjerg was a prolific Danish writer who published over 170 works and co-produced the film 4x4. |